新增于: v8.0.0
标准输入的别名。
类似于在其他命令行工具中使用 -
,这意味着脚本是从标准输入读取的,其余的选项将传给该脚本。
Added in: v8.0.0
Alias for stdin. Analogous to the use of -
in other command-line utilities,
meaning that the script is read from stdin, and the rest of the options
are passed to that script.